Method for transmitting and receiving data

Abstract

A method for transmitting and receiving data between a plurality of nodes, each performing a periodical standby operation at a specific interval, includes: a step of detecting another communicable node performed by one node; a step of consecutively transmitting notice information representing data transmission timing to another node for a plurality of number of times at a predetermined interval by using the one node; a step of performing a standby operation for data according to the data transmission timing represented in the notice information performed by the another node receiving the notice information within the periodical standby operation; a step of transmitting the notice information to the another node according to the data transmission timing performed by the one node; and a step of receiving the transmission data transmitted from the one node according to the notified data transmission timing performed by the another node.

The invention claimed is: 
     
       1. A method for transmitting and receiving data between a plurality of nodes, each of the plurality of the nodes performing a periodical standby operation at a specific interval, the method for transmitting and receiving data comprising:
 detecting, by one of the plurality of nodes, another communicable node from among the plurality of nodes; 
 consecutively transmitting, by said one node, notice information representing data transmission timing to said another node for a plurality of number of times at a predetermined interval; 
 performing, by said another node, a standby operation for data according to the data transmission timing represented in the notice information received within the periodical standby operation of said another node; 
 transmitting, by said one node, transmission data to said another node according to the data transmission timing; and 
 receiving, by said another node, the transmission data transmitted from said one node according to the notified data transmission timing, 
 wherein the detecting of said another communicable node comprises:
 repeating, by said one node, a discovery operation including transmission of node information that is information specific to the one node and a reception standby operation for data at a predetermined interval; and 
 transmitting, by said another node receiving the node information within the periodical standby operation, second node information that is information specific to said another node to the one node within the reception standby operation of the one node. 
 
 
     
     
       2. The method for transmitting and receiving data according to  claim 1 , wherein, in a case where the reception of the data is not completed within the periodical standby operation, the reception of the data is extended to be performed even after the end of the periodical standby operation. 
     
     
       3. A method for transmitting and receiving data between a plurality of nodes, each of the plurality of nodes performing a periodical standby operation at a specific interval, the method for transmitting and receiving data comprising:
 detecting, by one of the plurality of nodes, another communicable node from among the plurality of nodes; 
 transmitting, by said another node, standby information representing timing at which the periodical standby operation is performed to be continuous from the periodical standby operation before the periodical standby operation to the one node; 
 performing, by said one node, a standby operation simultaneously with generation of data to be transmitted to said another node; 
 receiving, by said one node, the standby information transmitted from said another node; 
 transmitting, by said one node, the data according to the timing represented in the received standby information; and 
 receiving, by said another node, the data transmitted from the one node within the periodical standby operation, 
 wherein the detecting of said another communicable node comprises:
 repeating, by said one node, a discovery operation including transmission of node information that is information specific to the one node and a reception standby operation for data at a predetermined interval; and 
 transmitting, by said another node receiving the node information within the periodical standby operation, second node information that is information specific to said another node to the one node within the reception standby operation of the one node. 
 
 
     
     
       4. The method for transmitting and receiving data according to  claim 3 , wherein, in a case where the reception of the data is not completed within the periodical standby operation, the reception of the data is extended to be performed even after the end of the periodical standby operation. 
     
     
       5. A method for transmitting and receiving data between a plurality of nodes, each of the plurality of nodes performing a periodical standby operation at a specific interval, the method for transmitting and receiving data comprising:
 detecting, by one of the plurality of nodes, another communicable node from among the plurality of nodes; 
 consecutively transmitting, by said one node, a standby information request for requesting standby information that represents timing at which said another node performs the periodical standby operation to said another node for a plurality of number of times at a predetermined interval; 
 performing, by said one node, a standby operation for the standby information transmitted from said another node continuously from the transmission of the standby information request for each of the plurality of number of times; 
 transmitting, by said another node receiving the standby information request from said one node, the standby information to said one node; 
 receiving, by said one node, the standby information transmitted from said another node; 
 transmitting, by said one node, data to said another node according to the timing represented in the received standby information; and 
 receiving, by said another node, the data transmitted from the one node within the periodical standby operation, 
 wherein the detecting of said another communicable node comprises:
 repeating, by said one node, a discovery operation including transmission of node information that is information specific to the one node and a reception standby operation for data at a predetermined interval; and 
 transmitting, by said another node receiving the node information within the periodical standby operation, second node information that is information specific to said another node to the one node within the reception standby operation of the one node. 
 
 
     
     
       6. The method for transmitting and receiving data according to  claim 5 , wherein, in a case where the reception of the data is not completed within the periodical standby operation, the reception of the data is extended to be performed even after the end of the periodical standby operation.